package com.company.netease2020;

import java.util.Scanner;

public class Test202006 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        byte t = sc.nextByte();
        while (t-- >0){
            int n = sc.nextInt();
            int k = sc.nextInt();
            int[] sticks = new int[n];
            for (int i = 0; i < n; i++) {
                sticks[i] = sc.nextInt();
            }
            String res = getRes(sticks,n,k);
            System.out.println(res);
        }
    }

    private static String getRes(int[] sticks, int n, int k) {
        return null;
    }
}
